MAC is legacy and read-only here
MAC (MacPaint) is a 1980s one-bit Macintosh bitmap format. It can usually be opened and converted from, but it's long obsolete, so there's no modern encoder to create new MAC files.
Looking for PNG to MAC? Here's why MAC isn't an output option — and the modern formats to use.
We don't create MAC files — it's a legacy format that's effectively read-only. Here's what to convert to instead.
MAC (MacPaint) is a 1980s one-bit Macintosh bitmap format. It can usually be opened and converted from, but it's long obsolete, so there's no modern encoder to create new MAC files.
For a file that opens everywhere, convert your PNG to JPG, TIFF or WEBP instead.
PNG is a lossless raster format with full transparency. It keeps every pixel intact, making it ideal for logos, icons, screenshots and graphics with sharp edges.
How to open PNG opens in every browser and image viewer, plus Photoshop, GIMP, Preview and Photos.
Full PNG format guideMAC is the MacPaint format from the original 1984 Macintosh, storing simple 1-bit black-and-white images at 576×720 — a piece of computing history.
How to open MAC opens in GraphicConverter and ImageMagick; convert to PNG for modern viewing.
Full MAC format guide